DC-CDI v14

My cutting-edge technology simplifies and speeds up your motorcycle tuning experience!
Just connect your phone to your beloved motorcycle, and you’re good to roll!

Imagine the ease of repair work with a programmable ignition that seamlessly adapts to a variety of bikes.
This is a game-changer for any motorcycle enthusiast, particularly when dealing with discontinued or overpriced original parts.
Making tuning a breeze and ensuring your engine performs at its best.

Programmable DC-CDI.

Features

• Programmable DC-CDI
• Suitable for ONE or TWO* cylinders
• For [2 strokes engines] and for [4 strokes engines with wasted spark*]

* On 4stk engines with a pickup on the crankshaft, one spark occurs during the compression stroke and another during the exhaust stroke.

• Easy programming via WiFi connection.
• You need a simple web browser on any smartphone or laptop. (No app)

• ONE or TWO programmable ignition timing curves. *
• Rev from 10 to 30,000 RPM.
• 0 deg advance from 1 to 500 RPM. (To avoid kickback)
• Adjustable timing in 13 steps from 500 to 20,000RPM.
• Rev limiter.
• Live Display of RPM and Timing via Wifi.

• 1 input for an inductive pickup (VR).
• 1 input for an Hall Effect Sensor, Optical sensors or Points (An external resistor is required) *
• VR conditioner to extract pickup signal in noisy environment.
• 1 output for a Capacitive coil type.

• 1 input for Kill switch.
• 1 input to select Timing N°1 or N°2 at startup *
• 1 output for 12v Tachometer signal. *
• 2 settings of High Voltage 150 or 300Volts.

• Power supply voltage DC 6 to 14 volts (For Setup AND to operate).
• Current drain: 100mA – 2A.
• Protected against reverse supply voltage.
• 300V 8A 12pins connector.
• 80MHz MicroController control unit.
• Non volatile configuration.

• Dimensions: 100 x 60 x 25mm (3.9 x 2.4 x 1inch)
• Plastic box potted for Electrical insulation, Protecting components from mechanical shock and vibration, thermal shock or Moisture.

• Made in France.

* Options

Cylinders

* Twin-cylinders at 360° crankshaft angle:
The engine works with WASTED spark.
If there is ONE twin coil:
=> This CDI works.

See: CDI compatibility

Pickup

Pickup Polarity

Pickup Position

Pickup Voltage

Hall Effect Sensor, Points

Live Display of RPM vs Timing via Wifi

For diagnostic or tuning purpose, it’s possible to live view RPM and Timing in degrees BTDC on a remote PC connected through Wifi: Video
Because of the impact on CDI performance, please disable this function when you are done with it!

Ignition timing

Windows software: Interactive_Graph.exe
(Extract this software to where it has read/write permission, i.e. in your Document folder)

Tip: No need to use all 13 points if the curve is straightforward.
Just use the first 2 or 3 timing pairs ! The ignition box will process that faster.

Video or use this XLS sheet.

Rev Limiter

The last RPM value that has been entered is the “rev limit” that stop all sparks.

Wiring

Pin 4 is the black mark

12 pins connector

HowTo setup

To program the ignition, please Print and follow this procedure: Setup Ignition box.pdf

Menu Demo.

The 12pins connector has a marker trace on pin4 which is Ground.
1) Connect a Black wire from connector pin4 to the black plug of a 12v battery.
2) Wire a bridge between connector pins 4 and 6 (ground and kill input).
3) Connect a Red wire from +12v connector pin5 to the red plug of the battery to power up the ignition.
4) Led blinks 5 times while a WiFi Access Point named “Transmic_ign” show up on you laptop/smartphone.
(If a password is asked, use “password”)

Diagnose with LED.

COIL

CDI ignitions need a CAPACITIVE coil type (AKA Transformer type) for CDI (Not a INDUCTIVE coil for TCI)
Ignition coils are different from TCI to CDI systems.
A CDI ignition can work with a TCI coil but the spark energy will be halved ! Why CDI coils don’t work with TCI ignitions?

– CDI coils have low inductance (L=0.1 to 0.7mH) and primary resistance of around 0.3 to 0.8ohm
– TCI coils have higher inductance (L=4 to 15mH) and primary resistance of around 1 to 5ohm

CDI coils: IMFsoft, Ignitech, FireCore, FuelTech, PW, M&W, Suzuki coil, Kawazaki coil,

PHOTOS.

Legal Eagle XL airplane with half VW engine. Twin cylinder, 4 strokes. 0.5-ohm Buick twin-post coil, MSD wires, Champion plugs, Hall sensor + DCCDIv12.


KTM640LC4-1999 (pickup position: 63°BTDC) :

VIDEOS

VERSIONS

ACCDI vs DCCDI vs TCI recap